Aenchbacher



(1ro Model.) G. A. AENGHBAGHER.

CAR TRUCK.

UNITED STATES PATENT OFFICE.

GOTLIEB ALFRED AENOHBAOHER, OF ATLANTA, GEORGIA, ASSIGNOR TO AENOHBAOHER du PRINCE, OF SAME PLACE.

CAR-TRUCK.

SPECIFICATION forming part of Letters Patent No. 550,935, dated December 3, 1895.

Application filed September l, 1894. Serial No. 521,928. (No model.)

To all whom, it Wtay concern:

Be it known that I, GorLIEB ALFRED AENCHBACHER, a citizen of the United States, and a resident of Atlanta, in the county of Fulton and State of Georgia, have invented certain new and useful Improvements in Car- Trucks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

This invention has for its object the construction of a car-truck that will adapt itself to curves without unnecessary friction and that will be automatic and easy of action and that will be efficient in all its other functions, as well as so improving the axle-box as to render it practically dust-proof and to prevent to the desired extent the dripping from the axle-box of oil or grease used as alubricant therein, the details of all of which will be hereinafter fully specified and are shown in their preferable form in the accompanying drawings, in which like reference characters are employed in the designation of corresponding elements in all the figures, which said figures are briefly described as follows:

Figure l is a side elevation of a pair of trucks from outside the track, showing also by a removal of the front half of one of the said trucks the construction and arrangement of the internal parts and how the desired relative movement of the pedestal and axle is provided for. Fig. 2 is a plan of the device as to internal elements and a sectional view of the pedestal horizontally cut about midway vertically. Fig. 3 is a Vertical section through the grease-box centrally and longitudinally of the axle-bearing, further showing the inclosed parts comprising the bearing-brass, abutting-plate, and dust-plates. Fig. 4 is a vertical cross-section of the grease-box on the line fr, Fig. 3, further showing the dustplates and their seat and the means for their pressure against the axle-bearing. Fig. 5 is a perspective view of one of the dust-plates, clearly showing its preferable construction.

The pedestal P is composed of guides p, vertically arranged and connected at their tops by a base of the proper form to be secured to the side sills of the car, braces for strength, of proper construction and, if desired, of fanciful design, being added, if requisite, connecting the said guides intermediately. Obviously the connection between the pedestal and the sill of the car may be rigid, or to the desired extent elastic, the latter being shown, however, in common form.

A grease and oil box carrying and guiding structure is formed of the bridge-bars F and G, respectively, the upper curved and the lower straight bridge-bars fastened together and held rigid relatively at their ends by blocks K, which said blocks have motion vertically within the guides of the pedestal P, as best shown in Figs. l and 2, the said guides being preferably thickened at their edges and the blocks K being of such form as to fit upon said guides and move freely thereon, the bridge-bars F and G holding them apart and in said guides. Guide-pins M, passing through the base of the pedestal, extend downwardly through the bridge-bars F and Gand the blocks K ,as best shown in Fig. l, and thereupon said elements as an entirety have vertical motion, said pins assisting the guides p in their functions, and reliable action is thereby doubly insured, stops consisting of pins, nuts, or other suitable construction upon the lower ends of said pins M preventing the blocks K and attached parts from separating themselves from the pedestal on the inversion or jerking up of the car. Seated on top of the bridge bar F and under the base of the pedestal, the pins M passing centrally through them, are the buffers l, of rubber or other suitable material, and seated upon these buffers or otherwise surrounding the pin M is a coiled spring L, of the desired form. Said springs L give resilience to downward movement of the car and the buffers Z elastically and noiselessly limit movement due to the said depression of the car. Should the springs L be compressed to their limit, bringing their spirals intocontact, the force of said contact will be relieved by the end seating of the springs upon the washers or annular extensions Z' of the rubber buffers Z, and hence said springs will not be so readily IOO broken as is commonly' the ease upon sudden incidental depressions of the car.

Carried between the bridge-bars F and G and having motion laterally therein is a casing D, which forms a grease-box, and the construction of which is best shown in Fig. 3. Said casing is provided with iianges f, as shown, which operate to prevent end motion of said casing in its bridge, and the said casing is provided with openings in its front and rear ends for the admission of waste and grease and for access to the interior and for the introduction of the axle A, and is internally chambered, substantially as shown, for the reception of the operative parts. The front opening is closed by a cover CZ', which hooks over the iiange (Z2 on the casing D, being secured at its lower end by the bolt d5 passing through and securing the two flanges (Z3 and d4 together. The removal of said bolt alone will hence allow the cover to be removed and give access to the interior.

Set in grooves or guides in the sides of the grease-box is a plate B, against which the ovaled or rounded end of the axle A abuts to prevent end-play with as little friction as possible, substantially a pivot-bearing being thus obtained. Depending from the under side of the casing is a projection d, which' has its lower end shaped to enter or receive a corresponding projection e on the upper side of the bearing-brass C, the construction. being essentially a ball-and-socket joint and allowing a universal movement of the bearing-brass relative to the easing. The axle runs in the said bearing-brass in the ordinary manner. ln a recess e, forming essentially vertical guides, are set the dust-guards c' and c2, which are made in the form substantially as shown in Fig. 5, their manner oi setting and movement, as shown in Figs. 3 and 4, being overlapping in their halved portions, their bifurcated ends bestriding the axle, the upper guard being held down by its gravity and the lower one by the springs e3, of form and arrangement as shown in Fig. 4, preferably by reason of its isolation from dirt, dust, and accidental derangement. A second recess 7L, of like character with the recess e, is provided, and seated within this recess is a rectangular washer Il, thickened and perforated in the center, whereby a perforated truncate-conical sleeve h is formed, which surrounds the axle and abuts against the hub of the wheel and makes a gland thereabout, which will eiectually prevent the entry of dust, assisting the guards e and e2 in their functions both as to the prevention of the entry of dust and the passage of grease to the wheels.

The washer Il obviously has play in the requisite directions within its casing in order that the end of the casing D may move relatively to said axle.

rlhe motion hereinbefore mentioned of the grease-box D laterally upon the guides form ed by the parallel portions oi the bars F and G is resisted elastically and in a greater degree in ratio to the distance from a normal position by the springs N, seated upon lugs 71` upon the sides of the casing D and upon the blocks K, as shown in Fig. l, which said lugs are in the construction shown utilized as sockets for the rubber buil'ers O by hollowing them out, as clearly shown in the lei't end of Fig. l. The function of these said buffers is to form elastic motion-limiting stops for the casing D upon the guides F and G.

Having thus described my invention, what Iclaim as new, and desire to secure by Letters Patent, is

ln combination the cheek pieces or hangers, supporting the beam of the car having vertical guide flanges or edges, a bridge composed of the upper and lower bars and end blocks, said end blocks being fitted to slide on the guiding iianges or edges of the cheek pieces, an axle box having guiding connections with the said upper and lower bars and arranged to move thereon, springs interposed between said axle box and said end pieces, said springs being supported on the box and end pieces, and vertically arranged springs interposed between the end block and the car, with guide rods therefor extending through said pieces, substantially as described.

In testimony whereof I hereunto atlix my signature in presence of two witnesses.

GO'lLlEB ALFRED AENCHBACHER. Vitnesses A. P. Woon, EDWD. P. XVooD. 

